G-Link
®
-LXRS
®
Wireless Accelerometer Node
User Manual
Specifications
60
10.2
Operating Specifications
Parameter
Specifications
Integrated sensors
Triaxial MEMS accelerometer
, 3 channels
Internal temperature,
1 channel
Data storage capacity
2 M bytes (up to 1,000,000 data points, data type dependent)
Accelerometer Channels
Measurement range
± 2
g
or ± 10
g
standard
Accelerometer bandwidth
0 to 500 Hz
Accuracy
10 m
g
Resolution
12 bit
Anti-aliasing filter bandwidth
Standard and NIST option: Single-pole Butterworth, -3 dB cutoff
at 500 Hz (factory adjustable)
ASTM option: Six-pole Chebyshev filter at a user-specified
cutoff frequency (typically 37 Hz)
Integrated Temperature Channel
Measurement Range
-40 °C to 70 °C
Accuracy and resolution
± 2 °C (at 25 °C) typical , 12 bit
Sampling
Sampling modes
Synchronized, low duty cycle, datalogging
Sampling rates
Continuous sampling:
1 sample/hour to 512 Hz
Periodic burst sampling:
32 Hz to 4096 Hz
Datalogging:
32 Hz to 4096 Hz
Sample rate stability
±3 ppm
Network capacity
Up to 2000 nodes per RF channel (and per gateway) depending
on the number of active channels and sampling settings.
Refer to the system bandwidth calculator:
http://www.microstrain.com/configure-your-system
Synchronization between nodes
± 32 μsec
Operating Parameters
Radio frequency (RF)
transceiver carrier
2.405 to 2.470 GHz direct sequence spread spectrum over 14
channels, license free worldwide, radiated power programmable
from 0 dBm (1 mW) to 16 dBm (39 mW); low power option
available for use outside the U.S.A.- limited to 10 dBm (10 mW)
RF range
70 m to 2 km line of sight
with RF power setting
RF communication protocol
IEEE 802.15.4
Power source
Internal: 3.7 V dc,220 mAh, rechargeable lithium polymer
battery, External: 3.2 V dc to 9 V dc
Power consumption
See power profile :
http://files.microstrain.com/G-Link-LXRS-Power-Profile.pdf
Operating temperature
-20 ˚C to + 60 ˚C (extended temperature range available with
custom battery/enclosure, -40 ˚C to + 85 ˚C electronics only)
Acceleration limit
500
g
(high
g
option available)
Physical Specifications
Dimensions
Standard and NIST option: 58 mm x 43 mm x 21 mm
ASTM option:X mm x Y mm x Z mm
Weight
40 grams
Environmental rating
Indoor use (IP65/66 enclosures available)
Enclosure material
ABS plastic
Integration
Compatible gateways
All WSDA
®
base stations and gateways
Software
SensorCloud™, Node Commander
®
, WSDA
®
Data
Downloader, Live Connect
™
, Windows XP/Vista/7 compatible
Software development kit (SDK)
Data communications protocol available with EEPROM maps
and sample code (OS and computing platform independent)
